check before: 2025-12-15
Product:
Teams, Windows
Platform:
Mac, Online, US Instances, Web, World tenant
Status:
Change type:
New feature, User impact
Links:
Details:
Summary:
Microsoft Teams will add message previews to channel, mention, and reaction notifications on Windows, Mac, and web starting mid-December 2025. Users can disable previews via notification settings. No admin action or policy changes are needed; the feature activates with client updates.
Details:
[Introduction]
Microsoft Teams is improving the notification experience by adding message previews to more types of notifications, including channels, mentions, and reactions. This enhancement helps users quickly assess the importance of a notification without switching context, prioritize responses more effectively, and enjoy a consistent experience across platforms.
This message applies to Teams for Windows desktop, Teams for Mac desktop and Teams for the web.
Screenshot: @mention notification with message preview
[When this will happen:]
Targeted Release (Worldwide): Rollout begins mid-December 2025; expected to complete by mid-December 2025
General Availability (Worldwide): Rollout begins mid-January 2026; expected to complete by mid-January 2026
General Availability (GCC, GCC High, DoD): Rollout begins mid-January 2026; expected to complete by late January 2026
Change Category:
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Scope:
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Release Phase:
Created:
2025-12-04
updated:
2025-12-04
Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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MS Urgency
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MS workload name
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Pictures
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summary for non-techies**
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Direct effects for Operations**
Notification Overload
With the addition of message previews, users may experience an influx of notifications, leading to potential distraction and decreased productivity as they may feel compelled to respond immediately to previews.
- roles: End Users, Team Leaders
- references: https://www.microsoft.com/en-us/microsoft-365/blog/2025/12/01/whats-new-in-microsoft-teams-december-2025/
User Confusion
Users may be confused by the new notification format, especially if they are not informed about the change, leading to misinterpretation of the importance of notifications and potential delays in response times.
- roles: End Users, IT Support
- references: https://www.microsoft.com/en-us/microsoft-365/blog/2025/12/01/whats-new-in-microsoft-teams-december-2025/
Configutation Options**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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